Spacer for concrete reenforcement



Sept. 11, 1928. 1383,829

T. H. KANE SPACER FOR CONCRETE REENFORCEMENT Filed June 1, 1925 1N EA/TOR.

23W War/Z 1i ATTORNEY.

Patented Sept. 11; 1928.-

UMTEDSTATES THOMAS H. KANE, 0F YOUNGSTOWN, OHIO, AssIeNoia TO rnusoon STEEL QQMPAlVY,'

OF YOUNGSTOWN, OHIO, A CORPORATION OF MICH IGAN."

sracnn non concnnrn nnnnrononmnn'r.

Application e lees 19 $a a11e 3 .9.65-

The'present invention relates to reenforcing elements for concrete structures and more specifically to suchfelements for reenforcing concrete columns.

Heretofore, reenforcing elements for columns, commonly called hooping, has been made by winding a helix of metal rod and spacing the flights thereof by means of a plurality of bars of T section having notches in the web portion in which notches the flights were placed and secured; This forms a cylindrical reenforcement having two or more of the longitudinal spacer bars.

One of the objections to this form of spacer is that it necessarily has a fixed longitudinal dimension and therefore has tobe used in factory fixed lengths or cut oif with considerable trouble and expense.

Among the objectsof the present invention therefore, is a reenforcement spacer that will permit adjustment of its length to a considerable degree, either for lengthening or shortening.

Another object is a spacer that may be easily adapted to hooping of various pitches and diameters.

Still another object is a' spacer which is suitable for use with hooping made of different gauges of metal rod.

Other objects will readily appear to those skilled in the. art upon reference'to the following description and claims in which:

Fig. 1 shows a portion of column reenforcement with one spacer in place and another in process of application.

Fig. 2 is a perspective view of the spacer.

Fig. 3 is a similar view of the locking rod.

Fig. 4 is an end view of a reenforcing elethat on the other about to be secured.

As indicated in the drawings, the hoop mg used with the present spacer consists of a helix or spiral 10 of metal rod, and the spacer consists of the two parts shown in:

Figs. 2 and 3. v

The part shown in Fig. 2 is the spacer proper and will be so called, being designated by the numeralll. This spacer before application to the spiral 10 consists of a small rod bent to form narrow loops 12, sufliciently wide to accommodate the largest gauge of spirally wound rod with which it is to be used. The loops 12 are spaced'apart by straight portions 13, the distance between the flights of the spiral 10. and,aslloops 12inay somewhere near their middle, as indicated in Figs. 2 and 4.

The application of the spacer. 11 to-a spiral 10 consists in sliding the loops 12 over the several flights of the spiral, then placing a straight rod 14 such as thatshown in Fig. 3, inside of the spiral 10 and in, the angleof the spacer 11 against the several flights. Then by means of a fiat bar, such as 15, the parts 13 may be bent around rod 14, as indicated most clearly in Figs. 1 and 4, locking the spacer 11 securely on the spiral.

Fig. 4 shows at A, in full lines, the spacer V 11 before being locked and, in dotted lines, its

form after looking. At B- is shown,.in full lines, the spacer 11 after being locked, and,

in dotted lines, before being locked. 7

It should be noted that, while the spacer 11 may be elongated or shortened without cutting or splicing to vary the total length or distance between the centers of the loops 12, 7

after the rod 14 has been placed in position and the portions 1301f spacer 11 bent around it to lock the several parts together, it will. be fixed in length for all ordinary handling, such as shipping or placing in position.

Having now described the invention and the preferred embodiment of the same, it

should be understood that it is not to be limited to the precise form shown and described,

put only by the scope of the claims which fol- Claims.

1. A spacer for theflights of concrete reenforcing hooping' consisting of a rod bent to form a series of narrow loops spaced apart the distance required between the flights and adapted to embrace a flight of said hooping.

1.00 a rod about which may be bent the portions of and alocking rod adapted to span said loops containing said flights and around which is adapted to be bent that portion of'thespacer rod between loops. J l i 3. As a new article .of manufacture a spacer for concrete reenforcing' hooping consisting of a rodqhent to fornia series ofspaced narrow parallel loops having the portions of the rod between the loops substantially in alignment, the loops being bent intermediate their ends and in the same direction.

4. As a new article of manufacture a spacer for concrete reent'orcing hooping consisting of a rod bent to form a series of spaced narrow parallel loops havin" the portions of the rod betwc en'the loops siibstantially in alignment, the loops being bent to form obtuse lioopin".

THOMAS H. KANE. 

